Fig. 8. Role of neur⁺ in eye patterning. (A,B) Tangential sections of adult eyes are shown. In A, ommatidia with ectopic R-cells (indicated by asterisks) within a clone of neur¹¹ cells. In B, the entire eye is the genotype indicated. (C,C') Eye discs labeled with anti-Delta and phalloidin. (D,D') Eye disc expressing a RO-GFP transgene and labeled with anti-Delta. (E,E') Eye disc containing a clone of neur¹ cells marked by the absence of GFP. In E, the clone border is outlined. The arrows in C-E indicate the position of the furrow. (F,F') An eye disc labeled with mAb323 [recognizes E(spl) proteins] containing neur¹ clones near the furrow, which are marked by the absence of GFP. In F, the clone borders are outlined and neur¹ cells that express E(spl) are marked with asterisks. Discs were observed at depths throughout the apical/basal plane and a few E(spl)-positive cells were found at a distance from the clone borders. Scale bar: 20 µm in A-C'; 15 µm in D-F'.